An interlaminar epidural steroid injection (ESI), often referred to simply as an 'epidural injection', involves placing the needle into the back of the epidural space and delivering the steroid over a wider area. With this approach the steroid will often spread over several spinal segments and cover both sides of the spinal canal.
Lumbar epidural steroid injection
Injection/steroid, epidural lumbar or sacral, single level
Epidural steroid injection, lumbar